Filling stop motion for looms



. Dec. 12,1944. P O I 2,365,044

FILLING STOP MOTION FOR LOOMS Filed A fii 21, 1944 2 Sheets-Sheet 1 I F1270612202: W V M Dec. 12, 1944.

FILLING STOP MOTION FOR LOOMS Filed April 21, 1944 2 Sheets-Sheet 2 vJ'TZJET'I?Q 25: W

.1. P. BLOUIN 2,365,044

feeler; and

Patented Dec. 12, 1944 UNITED STATES PATENT OFFICE- 2,365,044 FILLINGSTOP MOTION FOR LOOMS Joseph P. Blouin, Methuen, Mass. 7 ApplicationApril 21, 1944, Serial No. 532,044

3 Claims.

Fig. 1 is a side view of the mechanism applied to the conventional loom;

Fig. 2 is an end View; Fig. 3 is a plan .view; J v Fig. 4 is a view ofthe detail of the filling Fig. 5 is a diagram illustrating a detail ofthe mechanism. V

The lay A, the shuttle box B and the filling feeler C operated by theusual mechanism, not shown, are of the conventional type in which, whenthe shuttle lays a filling thread T in the shed, Fig. 4, the feeler, asthe lay beats up, comes down on top of this thread and its downwardmovement into the slot in the raceway on the lay is arrested and thefurther turning of the shaft C2, to which the feeler is fastened, isprevented. The shaft C2 is connected by a link to the dagger C4 pivotedat G5 on the lay, so that when the filling thread is present the daggeris raised above the end of lever D pivoted at Dl on the frame of theloom, Fig. 4. When the filling fails, Fig. 1, the feeler C is notarrested in its downward movement and the shaft C2 completes its turningmovement and the dagger C4 is depressed so as to initiate the action ofthe parts which stop the loom.

The loom parts, the feeler devices and the dagger are old in theconventional loom and are not part of my invention.

The conventional loom is also equipped with a warp stop mechanism, notshown, which, when a warp fails, actuates a lever WI, Fig. 1, pivoted onthe frame, to pull to the right a link W2 having a slot W3 in itsforward end into which projects a stud E6 on the brake handle orvertical lever E pivoted at El on the frame, whereby the lever E isactuated to cause loom stoppage. Also in the conventional loom, when thefilling is absent, the dagger in its depressed position hits and rocks alever which pulls the link W2 to the right to stop the loom by actingupon the stud E6. In this mechanism a severe strain is imposed upon thedagger because the leverage between the stud E6 and the pivot El of thelever E is so small that it not infrequently happens that the dagger,which must be light, is broken and loss in weaving results.

I overcome this objection by my invention.

I provide a lever D pivoted at -Dl on the frame,

'whichlever is hit by the dagger C4 when it is in its depressed positionon the beat up of the lay. Pivoted at D3 on lever D is a link D4,provided with a turnbuckle D5 to adjust its length,

which link extends downward and forward and has in its lower end acurved slot D6. To the end of the depending arm of the brake handle E isfixed a stud E2 on which is mounted a roller E3. The stud is loose inthe slot D6 but normally while the loom is running bears against theupper end of the slot, Fig. 1. The roller E3 normally lies and fits in aconcave notch Fl in the bottom of the end of lever F, pivoted at F2 onthe frame, Fig. 5. The lever F is pulled downward by a tension springF5, Fig. 1, fastened to the frame at F6, which stresses the lever F7 toturn counterclockwise about its pivot F8 on the frame, thereby pullingdown on the link F9 pivoted to the lever F1 and to the lever F. Alsopivotally connected to the lever F is a rod Flll which is connected tothe usual mechanism, not shown, by which the brake is applied 1 to stopthe loom.

The operation is as follows: When the filling fails, Fig. 1, the daggerC4 moves to its depressed position shown in Fig. 1. As the lay beats up,the dagger hits the end of lever D and rocks it counterclockwise aboutits pivot Dl and thereby pushes the link D4 downward. This pushes theroller E3 forward, or to the left, Figs. 1 and 5, out of the notch Fland into engagement with the curved bottom end F3 of lever F. In thismovement the roller moves the brake handle E clockwise about its pivotEl. As the lever arm between the centers El and. E2 is of substantiallength, i. e., at least three times as long as the distance between thestud E6 and the pivot El, the dagger C4 acts, through the mechanismdescribed, with effective increased leverage on the handle E. The stressof the spring F5, acting to pull lever F downwards, then pushes theroller E3 further to the left along the curved bottom end F3 of lever Fto the position shown in dotted lines in Fig. 1, the stud E2 sliding inthe slot D6. Thereby the brake handle E is rocked clockwise about itspivot El to the dotted line position, Fig. l. 'The movement of E carrieswith it the shipper handle G which disconnects the power drive of theloom. At the same time the downward movement of lever F pulls down rodFIO to apply the brake to stop the loom.

It will be seen that the force applied by the dagger C4 to the lever Dis needed only to force the roller E3 out of the notch Fl and to startthe movement of the brake handle E and that it acts at the end of thefull length of the arm E6Ei of lever E. Thereupon the spring F5 pullsdown lever F to force the roller E3 along the curved bottom end F3- orlever- F' fully to the left, thereby turning thebrake handle E and theshipper lever G clockwise, and also to pull down the rod FIO to applythe brake and stop the loom.

By this means the heavy workof operating the shipper lever and the brakelever are initiated by the dagger with the most efiecti've 'levera'ge sothat the dagger, although of the necessary lightness, is strong enoughfor performing its action without danger of breaking. Whereas intheconventional loom it frequently happens, owing to the heavy stressimposedupon the :daggen'lthatit breaks and thereby causes serious lossand. delay in weaving. My mechanism eliminates this'defeet inconventional looms and increases theiease with whichthe fillin stopmotion is operated and its efficiency.

1. In a loom having a lay, a'filling"fe'elerand a dagger-so actuated bythe filling 'feler that on "the'beat-up of the lay it is in liftedposition when "the "filling is present and in depressed position "whenthe filling is absent, the combination or a lever'pivot'ed on theframeand positioned to be hit'and'rocked'b'y the dagger whenthe daggeris indepiessed'positionfa link p'ivotallyconneoted other "end, avertical la er, by the movement of "which'the loom isstopped,pivotedonthe frame and having an arm extending downwardsya' stud on theend of'said arm projecting lq'oselyinto said slot; a rollerloose'on"said s'tudja'leverpivoted afcurve'd bottomat saiden'd"on'=which saidroller "rollswhe'n forced out of-s'aidnotch,-springprsseddevices connected tosaid notched-leverto press its said end down againstsaid-"rol'lerp whereby when the filling is absent said link is actuatedto force said roller out of said notch to initiate the movement of saidvertical lever to stop the loom.

2. In a loom having a lay, a filling feeler, a dagger, so actuated bythe filling feeler that on the beatup of the lay it is in liftedposition when the filling is present and in depressed position when thefilling is absent, and warp stop mechanism including a lever and a linkconnected thereto, *Which link, on the "failure of: a Warp, pushes"againsta stud'on a vertical lever to move the same to cause loomstoppage, said vertical lever being pivoted on the frame and having anarm 'extending downwards, said arm being at least three times as long asthe distance between said "stud and thepivot of said lever, thecombination -of-a lever-pivotedon the frame and positioned to be hit androcked by the dagger when in depressed position, a link pivotallyconnected at one endtosaid lever and having a slot at-its other end,'astud ontheen'd of the arm of said vertical flever projecting 'loo'selyinto said slot, a roller loose on said stud, a'horizontal' lever pivotedon the frame an'dhaving a curved notch near its outer end in which saidroller normally rests and a curved bottom at said end on which saidroller rolls whenforced out of said notch, spring pressed deVicestopress said end of saidnotched'lever down against said roller, wherebywhen'the' filling 'is absent the'link connected'to'the lever hit by thedagger is actuate'd'to'force said roller out of said notch to initiatethe movement ofsaid vertical lever to stop the loom with aleverage whichis at least three times greater than if saiddagger .actedupon the studonsaid verticallever as in the conventional loom.

3. In a loom having abrake handle lever'pivoted on' the frame and havinga depending arm and a fillingfeeler mechanisminoluding a dagger, the

combination'of' a lever so positioned as-to behit by the dagger when thefilling'fa'ils, a link pivotallyconnec'td at one end to said lever andhaving a slot in its other-endand a stud on the end of time .-dependingarm of the brakehan'dle lever projecting into said slot andslidabletherein.

, JOSEPH -P. BLOUIN.

